CORD GUI - Changed pom to use 1.7 compiler.
CORD GUI - Changed pom to use 1.7 compiler.

Change-Id: I20d552a97c5b8476e61fef3a61ff32efcbfb1e50

opennetworkinglab/onos,CNlukai/onos-gerrit-test,donNewtonAlpha/onos,planoAccess/clonedONOS,CNlukai/onos-gerrit-test,y-higuchi/onos,sonu283304/onos,gkatsikas/onos,opennetworkinglab/onos,gkatsikas/onos,gkatsikas/onos,opennetworkinglab/onos,donNewtonAlpha/onos,osinstom/onos,donNewtonAlpha/onos,lsinfo3/onos,y-higuchi/onos,Shashikanth-Huawei/bmp,oeeagle/onos,Shashikanth-Huawei/bmp,planoAccess/clonedONOS,lsinfo3/onos,maheshraju-Huawei/actn,rvhub/onos,opennetworkinglab/onos,y-higuchi/onos,kkkane/ONOS,zsh2938/onos,mengmoya/onos,castroflavio/onos,gkatsikas/onos,jinlongliu/onos,zsh2938/onos,opennetworkinglab/onos,packet-tracker/onos,osinstom/onos,sdnwiselab/onos,lsinfo3/onos,chenxiuyang/onos,LorenzReinhart/ONOSnew,packet-tracker/onos,jmiserez/onos,chinghanyu/onos,oplinkoms/onos,chinghanyu/onos,VinodKumarS-Huawei/ietf96yang,planoAccess/clonedONOS,chenxiuyang/onos,kkkane/ONOS,lsinfo3/onos,VinodKumarS-Huawei/ietf96yang,VinodKumarS-Huawei/ietf96yang,rvhub/onos,packet-tracker/onos,mengmoya/onos,chinghanyu/onos,Shashikanth-Huawei/bmp,mengmoya/onos,LorenzReinhart/ONOSnew,CNlukai/onos-gerrit-test,y-higuchi/onos,oplinkoms/onos,VinodKumarS-Huawei/ietf96yang,Shashikanth-Huawei/bmp,chenxiuyang/onos,zsh2938/onos,oeeagle/onos,jinlongliu/onos,maheshraju-Huawei/actn,sonu283304/onos,chinghanyu/onos,kkkane/ONOS,VinodKumarS-Huawei/ietf96yang,oeeagle/onos,sdnwiselab/onos,jmiserez/onos,zsh2938/onos,jinlongliu/onos,osinstom/onos,CNlukai/onos-gerrit-test,LorenzReinhart/ONOSnew,osinstom/onos,kuujo/onos,donNewtonAlpha/onos,castroflavio/onos,jmiserez/onos,kuujo/onos,sdnwiselab/onos,rvhub/onos,kuujo/onos,kuujo/onos,oplinkoms/onos,rvhub/onos,donNewtonAlpha/onos,oplinkoms/onos,sdnwiselab/onos,sonu283304/onos,oplinkoms/onos,mengmoya/onos,LorenzReinhart/ONOSnew,opennetworkinglab/onos,maheshraju-Huawei/actn,planoAccess/clonedONOS,kuujo/onos,gkatsikas/onos,y-higuchi/onos,sonu283304/onos,jmiserez/onos,kuujo/onos,oplinkoms/onos,oplinkoms/onos,LorenzReinhart/ONOSnew,kkkane/ONOS,osinstom/onos,chenxiuyang/onos,Shashikanth-Huawei/bmp,gkatsikas/onos,sdnwiselab/onos,packet-tracker/onos,oeeagle/onos,jinlongliu/onos,maheshraju-Huawei/actn,sdnwiselab/onos,castroflavio/onos,castroflavio/onos,maheshraju-Huawei/actn,mengmoya/onos,kuujo/onos